期刊
JOURNAL OF MEMBRANE SCIENCE
卷 443, 期 -, 页码 54-61出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2013.04.049
关键词
Membrane; Graft copolymer; Atom transfer radical polymerization (ATRP); CO2; Polymerized ionic liquid
资金
- National Research Foundation (NRF)
- Korean government (MEST) through the Korea CCS RD Center
- Basic Science Research Program [2009-0072025]
- Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea government Ministry of Knowledge Economy [20122010100040]
Amphiphilic graft copolymers consisting of poly(vinyl chloride) (PVC) main chains and polymerized ionic liquid (PIL) side chains were synthesized via atom transfer radical polymerization (ATRP). Successful synthesis of the graft copolymers was confirmed using H-1 nuclear magnetic resonance (H-1 NMR), Fourier-transform infrared (FT-IR) spectroscopy and X-ray diffraction (XRD) analysis. Differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS) analysis revealed well-defined microphase-separated structures in the hydrophobic PVC and the hydrophilic PIL domains. Thus, the PVC-g-PIL graft copolymer membranes maintained good mechanical properties (i.e. a lower strength and greater elongation than PVC) without losing separation properties, as confirmed by universal tensile machine (UTM) and mixture gas permeation tests of CO2/N-2 (50150) at 35 degrees C. As the content of PIL increased, the CO2 permeability increased with a slight decrease of selectivity. The CO2 permeability of PVC-g-PIL membrane with 65 wt% of PIL reached 17.9 Barrer at 35 degrees C, which was approximately ten times higher than that of the pristine PVC membrane (1.7 Barrer). Upon utilizing a PVC-g-PIL/IL composite with 15 wt% IL, the CO2 permeability increased to 137.6 Barrer by approximately 7.7-fold with a moderate decrease of selectivity. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据